Continuity mistake: The gang find Jonny tied up in a chair and he says it wasn't a publicity stunt. It cuts from the close up to show them all again, and suddenly Jonny is holding his hand to his head and Fred is suddenly pulling on the rope.

Continuity mistake: After the mystery is solved, the gang are driving away in the Mystery Machine. Shaggy and Scooby are in the back marveling at their wax dummies. Velma, Daphne, and Fred are in the front seat and can look back at them. But when it shows an angle from in front of them, the inside of the van behind Fred, Daphne and Velma can't be seen, only a solid gray wall where you should see Scooby, Shaggy, and their dummies, and even the back doors of the van.

Continuity mistake: Fred begins telling the gang his plan for trapping the Wax Phantom. They are standing at a window with Fred on the right, Daphne in the middle, and Velma on the left with Shaggy behind them. It cuts to a view from behind, and suddenly Daphne and Velma have switched spots, and Shaggy is off to the side.

Continuity mistake: In Mr. Grisby's house, Shaggy says "what a place to live," and Mr. Grisby is shown to be on the left side of him, Scooby and Velma with the crystal ball on their left. It cuts to a different angle as Velma says "it's a nice place" and Mr. Grisby is suddenly on the same side as the crystal ball with his hand on it.

Continuity mistake: When the door to Mr. Grisby's house opens, Shaggy and Scooby have their back to it with Shaggy holding Scooby's head. It cuts to a different angle, and instantly Shaggy has let go of Scooby and they are facing the door.

Continuity mistake: Fred is explaining his plan to check out the wax museum and Daphne is standing beside him. In the far shot she is facing him with her hand on her hip. It cuts to a close up of Fred and suddenly she is facing the same direction as him and has her arm down at her side.

Revealing mistake: When Shaggy has the gang look out the window and tricks them, he is talking and as his jaw moves, an extra layer keeps appearing and disappearing from his nose above the black line of the drawing.

Continuity mistake: Velma gets mad and stomps her foot, activating a secret switch. The floor is made of square and rectangular stones. The angle changes to show her Fred and Daphne, and suddenly the stones are of random organic shapes.

Continuity mistake: Fred and Daphne are dancing on stage and Jonny holding a trophy is standing off to the side by a microphone. It cuts to a close up of Jonny, and suddenly he is much closer to the mic, and holding the trophy higher.

Continuity mistake: When Fred says "Are we glad to see you guys!" after grabbing hold of Shaggy and Scooby, you can see behind Velma there is a hole in the wall. But in the close-up of Velma in the next shot, the hole has gone.

Continuity mistake: When Shaggy and Scooby Doo are on the floor after escaping from the Phantom on the conveyer belt, you can see there is some rope around them. But when the two run away from the Phantom, the rope has gone.

Continuity mistake: At the museum, Fred discovers a sign saying "Wax Phantom Display" on a concrete block. But when we see a full view of the gang a few seconds later, the sign and the block have disappeared.

Continuity mistake: Daphne is wearing pink tights at the start of the episode, but when the gang discover that the safe was robbed after freeing Johnny Sands, look at Daphne and you can see her tights are missing. They reappear when we see her with the gang a little later on.

Continuity mistake: When Shaggy says "What happened?" after the Wax Monster appears, you can see there is a seat behind Daphne, Fred and Velma, but when we see the three in the next shot, the seat has disappeared.

Revealing mistake: When the Wax Phantom first appears on stage, Roger Stevens, the culprit behind the phantom, can be seen at the far right of the stage, even though he should be in the Wax Phantom costume.